diff --git a/ChangeLog b/ChangeLog
index 61bd2c5..82e6505 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2015-05-10 16:30  marc
+
+	* ChangeLog, ax_check_qt.m4, ax_init_standard_project.m4,
+	  bootstrap.sh, configure.ac, debian/control.in, debian/rules,
+	  debian/swisssurfer.install, doc/doxyfile.in, doc/makefile.am,
+	  examples, examples/makefile.am, examples/qmake.pro.in,
+	  makefile.am, src/makefile.am, src/swisssurfer.pc.in,
+	  src/version.cxx, src/version.cxx.in, src/version.hxx, test: build
+	  should work now
+
 2015-03-15 22:59  marc
 
 	* configure.ac: compatibility with more distributions
diff --git a/configure.ac b/configure.ac
index 977eff3..f25ec1f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,6 +43,8 @@ AX_REQUIRE_QT([QT], [QtCore QtNetwork QtWebKit QtDesigner],
                     [QtWidgets QtWebKitWidgets QtPrintSupport])
 AX_QT_NO_KEYWORDS
 
+AX_PKG_REQUIRE([pkcs11], [p11-kit-1], [pkcs11.h], [libpkcs11-helper-1])
+
 AX_PKG_REQUIRE([libpcscxx])
 AX_PKG_REQUIRE([proxyface])
 AX_PKG_REQUIRE([mrwcxx], [mrw-c++])